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If there is no info on ticks in history, where are the ticks in tester coming from?

If there is no info on ticks in history, where are the ticks in tester coming from? I am not blind. I am serious. The history file contains only Open, High, Low, Close and Volume info. When we test the EAs, we see ticks. And we see the price TICKING up and down even on M1 time frame. When I asked

Do banks control modeling quality?

Do banks control modeling quality? Or is it the MT4 finction? I used M5 frame and the EA was pretty successful on the old data (25% quality). But it stops being successful and begins to lose when I test it closer to modern data. Long research, but I found the dates of switch. In February 2009, the